CAS Registry Number: 52-90-4
Molecular Formula: C3 H7 N O2 S
Molecular Weight: 121.16
Purity: HPLC more than 98%
Melting Point (Experimental)Value: 240 degrees centigrade (decomp)
Boiling Point (Predicted)Value: 293.9 more or less 35.0 degrees centigrade | Condition: Press: 760 Torr
Density (Experimental)Value: 1.6666 g/cm3 | Condition: Temp: 45.00 degrees centigrade
pKa (Predicted)Value: 2.07 more or less 0.10 | Condition: Most Acidic Temp: 25 degrees centigrade
Storage: 2-8 degrees centigrade, keep container tightly in a dry place, out of light.
L-Cysteine hydrochloride monohydrate USP is used as a precursor in food, and personal care products. It is actively involved in the production of flavors such as meat flavor obtained by reacting with sugars. It plays an important role as a key raw material for the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine and L-cysteine base. It is involved in the treatment of liver disease as an antioxidant and antidote. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool. U.S.P. A chemical grade of sufficient purity to meet or exceed requirements of the U.S. Pharmacopeia (USP); acceptable for food, drug, or medicinal use; may be used for most laboratory purposes. Sales Specifications Appearance: White crystalline powder Assay: 99.0-100.5% Identification: Infrared Absorption Specific Rotation: +5.5-+7.0o State of Solution: Clear and colorless, 98.0% Min Chloride: 19.89%-20.29% Ammonium: 0.02% Max Sulfate: 0.020% Max Iron: 10 PPM Max Heavy Metals: 10 PPM Max Arsenic: 1 PPM Max Other Amino Acids: Chromatographically not detectable Loss on Drying: 8.5%-12.0% Residue on Ignition: 0.1% Max pH: 1.5-2.0 Particle Size: 20 Mesh Bulk Density: 0.7-0.9 g/ml Tapped Density: 0.8-1.2 g/ml Lead: 1 PPM Max Mercury: 1 PPM Max Cadmium: 1 PPM Max Total Plate Count: Yeast and Molds: Coliforms: E Coli: Negative Salmonella: Negative Pseudomonas: Negative S. Aureus: Negative Packing 55.12 lb drum
L-Cysteine, E920, CAS No.52-90-4, a non-essential amino acid manufactured through fermentation. Cysteine is extracted from raw materials of animal and human origins. Cysteine has the same structure as serine, but with one of its oxygen atoms replaced by sulfur. As an experienced L-Cysteine manufacturer and supplier, we has been supplying and exporting L-Cysteine for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Categories Amino Acids Qty in 20â??FCL 12000kg Min Order 500kg Origin China Packaging Factory Packaging or Neutral Certificate ISO, Kosher, Halal, BRC E No. E920 CAS No. 52-90-4 HS Code 293090 Specification FCC/USP L-Cysteine Specification Item Specifications (AJI97 ) Appearance White crystal or crystalline powder; tasteless Assay, % 98.5~101.0 Specific rotation -218~ -224 Loss on drying, % 0.2 Transmittance, % 98.0 Chloride (as Cl), % 0.02 Sulfate (as SO4), % 0.02 Ammonium as (as NH4), % 0.02 Iron (as Fe), % .001 Heavy Metals (as Pb), % 0.001 Arsenic (as As), % 0.0001 pH Value 5.0~6.5 Residue on ignition, % 0.1 Other amino acid Conforms
N-Acetyl-L-Cysteine, commonly known as NAC, is renowned for its powerful antioxidant properties. By neutralizing harmful free radicals in the body, it helps protect against oxidative stress and supports overall cellular health. Additionally, NAC plays a crucial role in the production of glutathione, a vital antioxidant that aids in detoxification and immune system function. N-Acetyl-L-Cysteine USP kosher is used mainly in the pharmaceutical, food and Cosmetics industries. Itâ??s used as an anti-aging agent in cosmetics, itâ??s also used as raw pharmaceutical ingredient in the production of pharmaceuticals and medicines. Itâ??s is also used as a nutritional supplement in animal Feed. This product has been tested and meets the standards set by the United States Pharmacopeia (USP) for purity and quality. Kosher Certificate Is Available Upon Request Specifications (USP41) Appearance: White crystals or crystalline powder Identification: Infrared Absorption Assay: 98.0 to 102.0% (Calculated on the dried basis) Specific rotation alphaD25 +21.0 to +27.0 pH: 2.0 to 2.8 Loss on Drying: 1.0 % Max Residue on ignition: 0.5% Max Heavy metals (Pb): lO ppm Max Lead: 3 ppm Max Arsenic (AS203): 1 ppm Max Cadmium: 1 ppm Max Mercury(Hg): 0.1 ppm Max Residual Solvents: Meets the requirements Particle Size: 20 Mesh Density: Bulk density report only, Tap density report only Total plate count: < 1000 cfu/g Yeast & molds: < 100 cfu!g Coliforms: < 10 cfu/g E Coli: Negative Salmonella: Negative Pseudomonas: Negative S.Aureus: Negative Packing 55.115 lb cardboard drum.
N-acetyl-l-cysteine Used in food additive or medicine products, also could be used in nutritional products or other fields.Widely used in food processing, biological study, material of chemical industry. 25kgs fibre drum, inside with double p-e bags
L-cysteine HCL monohydrate L-cystine 56-89-3 L-cysteine base 52-90-4 L-cysteine hcl anhydrous 52-89-1 L-cysteine hcl monohydrate 7048-4-6 S-carboxymethyl-l-cysteine 638-23-2 N-acetyl-l-cyteine (nac) 616-91-1 D-cysteine hcl monohydrate 32443-99-5 D-cystine 349-46-2 Dl-cysteine hcl 96998-61-7 Cbz-s-phenyl-l-cysteine 159453-24-4 Packing: 25kgs/ fiber drum Manufacture standards·ªpharmaceutical grade Price: fob, cif
L-cysteine hcl Appearance white crystals or crystalline powder; strongly acid taste. Identification infrared absorption Specific optical rotation +5.6~ +8.9 Sulfate f_ 0. 03 % Iron f_ 0. 003 % Heavy metals (as pb), f_ 0.00 15% Organic volatile impurities meets the requirement Loss on drying, f_ 1 % Residue on ignition, c f_ 0.1% Assay 98.5-101.5 % Ph value 1.5 - 2.0 Organic volatile impurities meets the requirement Packing: 25kg fiber drum Usp24
L-Cysteine hydrochloride anhydrous product Name: L-Cysteine hydrochloride anhydrous Synonyms: L-Cysteine hydrochloride; L-cysteine hcl cell culture tested; H-Cys-OH.HCl; L-Cysteine Hcl Anhydrous; L-Cysteine HCl; Di-isopropyl nahpthalene; L-cysteine hydrochloride (1:1); L-Cysteine HCl anhydrate; cysteine, chloride (1:1); 2-(2-Methoxy Ethoxy) Acetaldehyde Dimethyl Actal Molecular Formula: C3H7ClNO2S Molecular Weight: 156.6117 CAS Registry Number: 52-89-1 EINECS: 200-157-7 Packing:25kg/drum Assay:99% Price:$10/kg
L-Cysteine(CAS:52-90-4)
Regarding Amino Acids, we can provide many kinds of Amino Acids as following. We have license of GMP, ISO, HALAL, KOSHER, KDMF and COS, exported to North America, Europe, Japan, Korea and so on. L-Cysteine and its derivatives L-Cysteine Hydrochloride Monohydrate L-Cysteine Hydrochloride Anhydrous L-Cysteine S-Carboxymethyl-L-CysteineCarbocisteine) N-Acetyl-L-Cysteine L-Thioproline L-Amino acids L-Citrulline L-Ornithine Monohydrochloride L-Methionine L-Leucine L-Tyrosine L-Valine L-Isoleucine L-Glutamine L-Tryptophan L-Lysine Hydrochloride L-Serine L-Cystine L-Arginine Hydrochloride L-Arginine L-Histidine Monohydrochloride L-Histidine Acetyl amino acids N-Acetyl-L-Cysteine N-Acetyl-L-Tyrosine N-Acetyl-DL-Leucine N-Acetyl-L-Methionine N-Acetyl-L-Glutamine N-Acetyl-L-Leucine N-Acetyl-DL-Methionine N-Acetyl-L-Tryptophan N-Acetyl-L-Phenylalanine N-Acetyl-L-Citrulline N-Acetyl-L-Thioproline N-Acetyl-L-Hydroxy proline N-Acetyl-L-Alanine N-Acetyl-L-Glutamic acid N-Acetyl-L-Histidine N-Acetyl-L-Isoleucine N-Acetyl-L-Proline N-Acetyl-L-Valine DL/D-Amino acids DL-Cysteine Hydrochloride Monohydrate DL-Cysteine base DL-Leucine D-Cysteine Hydrochloride Monohydrate Compound salts of amino acids L-Arginine L-Aspartate L-Ornithine L-Aspartate L-Arginine L-Glutamate L-Arginine L-Pyroglutamate L-Lysine S-Carboxymethyl-L-Cysteine Amino acids esters L-Cysteine Ethyl ester Monohydrochloride L-Tyrosine Ethyl ester Monohydrochloride L-Ornithine Ethyl ester dihydrochloride L-Leucine Ethyl ester Monohydrochloride L-Lysine Ethyl ester dihydrochloride Etc.
